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<div class="header">
  <div class="summary">
<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="#pro-methods">Protected Member Functions</a> &#124;
<a href="class_qwt_dial_needle-members.html">List of all members</a>  </div>
  <div class="headertitle">
<div class="title">QwtDialNeedle Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div>  </div>
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<p>Base class for needles that can be used in a <a class="el" href="class_qwt_dial.html" title="QwtDial class provides a rounded range control.">QwtDial</a>.  
 <a href="class_qwt_dial_needle.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="qwt__dial__needle_8h_source.html">qwt_dial_needle.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for QwtDialNeedle:</div>
<div class="dyncontent">
<div class="center"><img src="class_qwt_dial_needle__inherit__graph.png" border="0" usemap="#_qwt_dial_needle_inherit__map" alt="Inheritance graph"/></div>
<map name="_qwt_dial_needle_inherit__map" id="_qwt_dial_needle_inherit__map">
<area shape="rect" title="Base class for needles that can be used in a QwtDial." alt="" coords="250,5,363,32"/>
<area shape="rect" href="class_qwt_compass_magnet_needle.html" title="A magnet needle for compass widgets." alt="" coords="5,80,197,107"/>
<area shape="rect" href="class_qwt_compass_wind_arrow.html" title="An indicator for the wind direction." alt="" coords="222,80,391,107"/>
<area shape="rect" href="class_qwt_dial_simple_needle.html" title="A needle for dial widgets." alt="" coords="416,80,571,107"/>
</map>
<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:aef3af79632ce784bc4d7332f6e269a1f"><td class="memItemLeft" align="right" valign="top"><a id="aef3af79632ce784bc4d7332f6e269a1f"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#aef3af79632ce784bc4d7332f6e269a1f">QwtDialNeedle</a> ()</td></tr>
<tr class="memdesc:aef3af79632ce784bc4d7332f6e269a1f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:aef3af79632ce784bc4d7332f6e269a1f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac23b2af4af50042967c8cea87b474247"><td class="memItemLeft" align="right" valign="top"><a id="ac23b2af4af50042967c8cea87b474247"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#ac23b2af4af50042967c8cea87b474247">~QwtDialNeedle</a> ()</td></tr>
<tr class="memdesc:ac23b2af4af50042967c8cea87b474247"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:ac23b2af4af50042967c8cea87b474247"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae850883a64501136bca64d6ea2d084b9"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#ae850883a64501136bca64d6ea2d084b9">setPalette</a> (const QPalette &amp;)</td></tr>
<tr class="separator:ae850883a64501136bca64d6ea2d084b9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad4c32d58f2b8e77fd66e0dfc66b7c37a"><td class="memItemLeft" align="right" valign="top">const QPalette &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#ad4c32d58f2b8e77fd66e0dfc66b7c37a">palette</a> () const</td></tr>
<tr class="separator:ad4c32d58f2b8e77fd66e0dfc66b7c37a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3b437180b9f4085485a6003d211f6efa"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a3b437180b9f4085485a6003d211f6efa">draw</a> (QPainter *painter, const QPointF &amp;center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const</td></tr>
<tr class="separator:a3b437180b9f4085485a6003d211f6efa"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr class="memitem:a1e4fee366fec1838edc18890d9957f2b"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a1e4fee366fec1838edc18890d9957f2b">drawNeedle</a> (QPainter *painter, double length, QPalette::ColorGroup colorGroup) const =0</td></tr>
<tr class="memdesc:a1e4fee366fec1838edc18890d9957f2b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Draw the needle.  <a href="class_qwt_dial_needle.html#a1e4fee366fec1838edc18890d9957f2b">More...</a><br /></td></tr>
<tr class="separator:a1e4fee366fec1838edc18890d9957f2b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a769a895b3fefd851b44021ca118f2422"><td class="memItemLeft" align="right" valign="top"><a id="a769a895b3fefd851b44021ca118f2422"></a>
virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a769a895b3fefd851b44021ca118f2422">drawKnob</a> (QPainter *, double width, const QBrush &amp;, bool sunken) const</td></tr>
<tr class="memdesc:a769a895b3fefd851b44021ca118f2422"><td class="mdescLeft">&#160;</td><td class="mdescRight">Draw the knob. <br /></td></tr>
<tr class="separator:a769a895b3fefd851b44021ca118f2422"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Base class for needles that can be used in a <a class="el" href="class_qwt_dial.html" title="QwtDial class provides a rounded range control.">QwtDial</a>. </p>
<p><a class="el" href="class_qwt_dial_needle.html" title="Base class for needles that can be used in a QwtDial.">QwtDialNeedle</a> is a pointer that indicates a value by pointing to a specific direction.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_dial.html" title="QwtDial class provides a rounded range control.">QwtDial</a>, <a class="el" href="class_qwt_compass.html" title="A Compass Widget.">QwtCompass</a> </dd></dl>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a id="a3b437180b9f4085485a6003d211f6efa"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3b437180b9f4085485a6003d211f6efa">&#9670;&nbsp;</a></span>draw()</h2>

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<div class="memproto">
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  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">void QwtDialNeedle::draw </td>
          <td>(</td>
          <td class="paramtype">QPainter *&#160;</td>
          <td class="paramname"><em>painter</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const QPointF &amp;&#160;</td>
          <td class="paramname"><em>center</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>length</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>direction</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">QPalette::ColorGroup&#160;</td>
          <td class="paramname"><em>colorGroup</em> = <code>QPalette::Active</code>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">
<p>Draw the needle</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">painter</td><td>Painter </td></tr>
    <tr><td class="paramname">center</td><td>Center of the dial, start position for the needle </td></tr>
    <tr><td class="paramname">length</td><td>Length of the needle </td></tr>
    <tr><td class="paramname">direction</td><td>Direction of the needle, in degrees counter clockwise </td></tr>
    <tr><td class="paramname">colorGroup</td><td>Color group, used for painting </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<a id="a1e4fee366fec1838edc18890d9957f2b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1e4fee366fec1838edc18890d9957f2b">&#9670;&nbsp;</a></span>drawNeedle()</h2>

<div class="memitem">
<div class="memproto">
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  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">virtual void QwtDialNeedle::drawNeedle </td>
          <td>(</td>
          <td class="paramtype">QPainter *&#160;</td>
          <td class="paramname"><em>painter</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>length</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">QPalette::ColorGroup&#160;</td>
          <td class="paramname"><em>colorGroup</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">protected</span><span class="mlabel">pure virtual</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">

<p>Draw the needle. </p>
<p>The origin of the needle is at position (0.0, 0.0 ) pointing in direction 0.0 ( = east ).</p>
<p>The painter is already initialized with translation and rotation.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">painter</td><td>Painter </td></tr>
    <tr><td class="paramname">length</td><td>Length of the needle </td></tr>
    <tr><td class="paramname">colorGroup</td><td>Color group, used for painting</td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_dial_needle.html#ae850883a64501136bca64d6ea2d084b9">setPalette()</a>, <a class="el" href="class_qwt_dial_needle.html#ad4c32d58f2b8e77fd66e0dfc66b7c37a">palette()</a> </dd></dl>

<p>Implemented in <a class="el" href="class_qwt_compass_wind_arrow.html#a91977dd1ec99cb874b1a83070d99f2f5">QwtCompassWindArrow</a>, <a class="el" href="class_qwt_compass_magnet_needle.html#a3e9787b5d4fa1264e3e05ccdf049ffa9">QwtCompassMagnetNeedle</a>, and <a class="el" href="class_qwt_dial_simple_needle.html#ad11e71682e22d929c5c67b49c08e6084">QwtDialSimpleNeedle</a>.</p>

</div>
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<a id="ad4c32d58f2b8e77fd66e0dfc66b7c37a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad4c32d58f2b8e77fd66e0dfc66b7c37a">&#9670;&nbsp;</a></span>palette()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">const QPalette &amp; QwtDialNeedle::palette </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
</div><div class="memdoc">
<dl class="section return"><dt>Returns</dt><dd>the palette of the needle. </dd></dl>

</div>
</div>
<a id="ae850883a64501136bca64d6ea2d084b9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae850883a64501136bca64d6ea2d084b9">&#9670;&nbsp;</a></span>setPalette()</h2>

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<table class="mlabels">
  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">void QwtDialNeedle::setPalette </td>
          <td>(</td>
          <td class="paramtype">const QPalette &amp;&#160;</td>
          <td class="paramname"><em>palette</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">
<p>Sets the palette for the needle.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">palette</td><td>New Palette </td></tr>
  </table>
  </dd>
</dl>

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